Market Segment:
Performance Compact Sedan/Wagon, Rally-inspired homologation special
Key Competitors Era:
Mitsubishi Lancer Evolution, Ford Focus RS, Volkswagen Golf GTI
Performance Focus:
All-Wheel Drive, turbocharged engine, driver-focused chassis tuning
Rally Heritage:
Direct descendant of Subaru's World Rally Championship (WRC) cars
Diy Support:
Empowers owners to perform maintenance, diagnostics, and repairs, saving on labor costs
Accuracy Reliability:
Provides manufacturer-approved procedures and specifications for optimal results
Applicable Years:
2003, 2004
Regional Variants Covered:
JDM, USDM, EUDM (primarily JDM/USDM focus)
Estimated Page Count:
Over 2000 pages (typical for complete workshop manuals)
Manual Type:
Workshop Service Repair Manual
Format:
Digital Download (PDF)
Powertrain:
Engine, Transmission, Drivetrain, Fuel System, Exhaust System
Chassis:
Suspension, Steering, Brakes, Wheels, Tires
Electrical:
Wiring Diagrams, Lighting, Instruments, Audio System, ECUs, Sensors
Body And Interior:
Body Panels, Doors, Seats, HVAC, Safety Systems (Airbags)
Maintenance:
Scheduled maintenance, fluid changes, filter replacements, inspections
Diagnostics:
Troubleshooting guides, DTC (Diagnostic Trouble Code) interpretation, symptom-based diagnostics
Repair:
Component removal and installation, major overhauls, system repairs
Adjustments:
Wheel alignment, clutch adjustment, idle speed adjustment
Special Tools:
Identification and usage of specialized Subaru tools
Depth:
Comprehensive, covering everything from basic checks to complete engine and transmission rebuilds
Detail Level:
Detailed step-by-step instructions, torque specifications, diagrams, and schematics
Engine Type:
Horizontally-opposed (Boxer) 4-Cylinder, turbocharged, intercooled
Engine Code:
EJ207 (DOHC, AVCS)
Displacement:
1994 cc (2.0 Liters)
Horsepower Ps:
280 PS @ 6400 RPM (JDM spec; may vary slightly by region)
Torque Nm:
352 Nm @ 4400 RPM (JDM spec; may vary slightly by region)
Fuel Delivery:
Electronic Fuel Injection (EFI) with sequential multi-port injection
Fuel Type:
Unleaded gasoline, premium (95 RON or higher recommended)
Coolant Type:
Subaru Super Coolant (Blue) or equivalent silicate-free ethylene glycol coolant
Transmission Type:
6-speed Manual Transmission (STI-specific 'Dog-leg' or close-ratio gearbox)
Optional Transmission:
None (Manual only for STi)
Drivetrain Configuration:
Symmetrical All-Wheel Drive (AWD) with Driver Controlled Center Differential (DCCD)
Manual Transmission Fluid Spec:
Subaru Extra S (Hypoid Gear Oil API GL-5, SAE 75W-90)
Front Differential Fluid Spec:
Subaru Extra S (Hypoid Gear Oil API GL-5, SAE 75W-90)
Rear Differential Fluid Spec:
Subaru Extra S (Hypoid Gear Oil API GL-5, SAE 75W-90)
Body Styles:
4-door Sedan, 5-door Wagon
Length Mm:
4405 mm (Sedan) / 4465 mm (Wagon)
Height Mm:
1440 mm (Sedan) / 1490 mm (Wagon)
Curb Weight Kg:
Approx. 1430 kg (Sedan) / 1470 kg (Wagon)
Standard Wheel Size:
17 x 7.5 inches
Optional Wheel Size:
17 x 8.0 inches (STi specific)
Wheel Bolt Pattern:
5 x 100 mm
Standard Tire Size:
225/45 R17
Brake Rotor Size Front Mm:
315 mm (Ventilated Discs)
Brake Rotor Size Rear Mm:
300 mm (Ventilated Discs)
NHTSA Ratings Usdm Era:
4-star frontal driver, 5-star frontal passenger (typical for this era, specific ratings may vary)
AWD System:
Symmetrical All-Wheel Drive with DCCD (Driver Controlled Center Differential)
Limited Slip Differentials:
Front helical LSD, Rear viscous LSD (STi specific)
Braking System:
Four-wheel disc brakes, ABS (Anti-lock Braking System), Electronic Brake-force Distribution (EBD)
Airbags:
Driver and passenger front airbags, side airbags (optional/regional)
Seatbelts:
Pretensioner and force-limiting seatbelts
Audio System:
Factory CD player with AM/FM radio, usually 4 or 6 speakers
Instrument Cluster:
Tachometer, speedometer, fuel gauge, coolant temperature gauge, various warning lights, boost gauge (STi specific)
Traction Control:
Standard ABS, but limited electronic traction control beyond AWD and LSDs
Original Connectivity:
Basic, no modern Bluetooth or USB connectivity from factory
Oil Change Interval Km:
5,000 - 7,500 km or 6 months, whichever comes first (severe use)
Air Filter Replacement Km:
15,000 - 30,000 km
Spark Plug Replacement Km:
Approx. 80,000 - 100,000 km (iridium plugs)
Timing Belt Replacement Km:
Not applicable (uses a timing chain)
Engine Oil Capacity Liters:
4.5 Liters (with filter change)
Engine Oil Type:
SAE 5W-30 or 10W-30 synthetic API SJ, SL, or SM, ILSAC GF-3 or GF-4
Coolant Capacity Liters:
Approx. 7.0 Liters
Brake Fluid Type:
DOT 3 or DOT 4
Engine Oil Consumption:
Some EJ207 engines can exhibit oil consumption; regular checks are vital
Clutch Wear:
High-performance clutch can wear faster with aggressive driving
Suspension Bushings:
Wear can lead to imprecise handling and noise, especially with age
Turbocharger Maintenance:
Proper warm-up and cool-down procedures are critical for turbo longevity
Subaru Rally History:
Decades of success in WRC and other motorsport disciplines, establishing Subaru's performance image
Impreza Introduction:
First generation launched in 1992, with performance variants (WRX) appearing shortly after
Gd Gg Generation:
Second generation (2000-2007), with significant chassis and powertrain updates
2003 Update:
Introduction of the 'Bugeye' facelift (in some markets) and refinement of the STi model
Production Location:
Mainly Japan (Gunma Prefecture plant)
Production Years Gd Gg:
2000-2007
Rally Homologation:
Designed to meet homologation requirements for WRC competition, contributing to its enthusiast appeal
Performance Magazine Awards:
Frequently praised by automotive publications for its handling, all-wheel-drive grip, and rally-bred performance
Cult Status:
Achieved significant cult following among enthusiasts for its raw driving experience and motorsport pedigree
